Chimney-top



(No Model.)

C. KUHNHOLD & W. STEUP.

GHIMNBY TOP.

No. 587,978. Patented Aug. 10', 1897.

Emi

UNITED STATES PATENT OFFICE.

CARLS KUlINllOL-D AND XVILLIAH STEUP, OF ALLEGHENY, PENNSYLVANIA.

cHlMNEY-Top.

SPECIFICATION forming part of Letters Patent No. 587,978, dated August10, 1897.

i Application filed April 6, 1897. Serial No. 630,977. (No model.)

To all whom it may concern:

Be it known that we, CARLS KUHNHOLD and WILLIAM STEUP, citizens of theUnited States of America, residing at Allegheny, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Chimney-Tops, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements inchimney-cowls, and has for its object to provide a perfect draft in achimney without necessitating the building of the chimney to a heightequaling the height of the surrounding buildings and as is now necessaryby reason of the downdraft that is caused by an adjacent building beinghigher than the chimney; and to this end the invention consists in thenovel construction, combination, and arrangement of parts to behereinafter more specifically described, and particularly pointed out inthe claims.

The invention, briefly described,.aims to accomplish the above result bymeans of flapvalves arranged in the cowl and adapted to close theoutlet-ports at the side of the cowl from which the wind may be blowing,thus permitting the free and uninterrupted draft of the opposite side ofthe cowl and by reason of the obstacle presented to the wind forcing thesame downwardly after it has entered the surrounding band of the cowl,and thereby increasing the circulation and draft of same.

In describing the invention in detail reference is had to theaccompanying drawings, forming a part of this specication, and whereinlike letters of reference indicate similar parts throughout the severalviews, in which- Figure lis a perspective view of our improved cowl inposition on the chimney. Fig. 2 is a horizontal sectional view. Fig. 3is a vertical sectional view of a portion of the cowl, taken on the lineXX, shown in Fig. 2.

Referring now to the drawings by reference-letters7 a indicates theiiue, which is provided with a base-flange b, adapted to be anchored toor within the brickwork of the chimney. The upper end of this flue-pipeis ared outwardly in cone form and is pro vided with a series ofopenings c, and on its upper end is secured a cone-shaped cap d,

while. abutting against this cap and the upper end of the iue and withinlthe same is a deflecting-frustum e. Secured to the underneath face ofthe rim of the conical cap d and to the upper end of the Haring portionof the flue-pipe e is a band f, which extends downward to the point offlare in the fluepipe, said band being provided with a series ofopenings g and having hinged to its inner face nap-valves h to coversaid openings, a bell-shaped or flared guide la being arranged on theband around the said openings g, and partitions Z being secured to theflue and band to prevent the circulation of air around the fine.

The operation is as follows: The cowl being secured on top Vof thechimney, the smoke enters the flue a and when it comes in contact withthe frustuin e is deiiected so as to force it to escape through theapertures c in the flared portion of the flue, and the flapvalves hbeing closed the smoke is forced downwardly and escapes at the base ofthe rim f.

It will be observed that as the wind is blowing against one side of thecowl the flap valve or valves which are engaged by the wind will beforced inwardly, and if the current of the wind is sufficiently strongthe apertures o on this side of the cowl will be entirely closed and thewind prevented from entering within the iiue, while the draft on theopposite side of the cowl remains the saine and permits the escape ofthe smoke. Furthermore, if the flap-valve is only partly open the windwill be deflected downward by the same and increased draft will becreated for the smoke that may be escaping through the apertures c onthis side of the cowl. By this arrangement it will be observed that aperfect draft will be at all times attained, as no downdraft that may becaused by high adjacent buildings is permitted within the cowl, and theupdraft within the chimney retained at all times.

' It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of our invention.l

Having fully described our invention,what we claim as new, and desire tosecure by Letters Patent, is

IOO

' vided with openings, a band surroundin g said flared portion Which isalso provided with openings opposite the openings in the ared portion7flap-valves for covering the openings in the band and adeflecting-frustunl Within the flared portion7 substantially as shownand described.

In a chimney-cowl the combination of the flue-pi pe provided withopenings, a band surrounding the upper portion of said fluepipe, saidband being providedwith openings and flap-valves and adefiecting-frustum Within the fine, substantially as show n anddescribed.

Intesiniony whereof We affix our signatures in the presence of twoWitnesses.

CARLS KUHNHOLD. VILLIAM STEUP.

Titnessesz JOHN NOLAND, GEo. B. PARKER.

